Apparatus for making metallic oxids.



No. 731,055. PATENTED JUNE 16, 1908.

v M. JAGOBI. I APPARATUS FOR-MAKING METALLIC OXIDS.

APPLIOATION FILED FEB. 19. 1903.

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No. 731,055. Patented June 16, 1903.

UNITED STATES PATENT OFFICE.

MAURICE JACOBI, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE- TENTH TO OSCAR G. 'BOEHM, OF PHILADELPHIA, PENNSYLVANIA.

APPARATUS FOR MAKING METALLIC OXIDS.

SPECIFICATION forming part of Letters Patent No. 731,055, dated June 16, 1903.

Application filed February 19, 1903. Serial No. 144,145. (No model.)

To all? whom i may concer'm' area of the bottom of the casing back and Beit known that I, MAURICE JACOBI, acitiforth in serpentine or zigzag form, so as to zen of the United States, residing at Philatransmit heatequitably to allpointsofthecasdelphia, in the county of Philadelphia and ing, the heat being taken up and distributed 55 State of Pennsylvania, have invented certain by the sand. The box or casing is adapted to new and useful Improvements in Apparatus contain a series of oxidizing pots or vessels 8, for Making Metallic Oxids; and I do declare which are adapted to' contain the metalfor the following to be a full, clear, and exact instance, zincto be oxidized and the acid description of the invention, such as will enwhich is vaporized to effectthe oxidation. 60 i0 able others skilled in the art to which it ap- Each pot has a frusto-conical lower end 9, pe tains to make and use the same. forming a containing-space for the acid 10,

This invention relates to an apparatus for and is closed at the top by a removable airmaking oxids of metals by the aid of heat and tight cover 11. At the point of junction of acids. the body portion of the pot and the frusto- 65 With this and other objects in view the inconical end thereof a supporting flanged rib vention consists in certain novel features of or bead 12 is formedupon the interior of the construction, combination, and arrangement pot to support the metal 13, which latter is of parts, which will be hereinafter more fully cast into foraminous disks or buttons of the described, and particularly defined in the apform shown in Fig. 5, these buttons being 70 2e pended claims. arranged one upon the other until the pot is In the accompanying drawings, Figure 1 filled and the air-spaces therein allowing the -is a perspective view of an apparatus for vapor from the acid below to circulate and making metallic oxids constructed in accordcome in contact with all particles of the metal ance with my invention. Fig. 2 is a vertical and efiect the ready oxidation of the same. 75

section of the same, showing the manner of The pots are preferably made of earthenware packing the pots or retorts therein. Fig. 3 glazed on the interior and of asuitable height is a horizontal section showing the arrangeand diameter to serve the purpose. ment of the steam-pipe. Fig. 4 is a vertical The mode of operation is as follows: Asuitsectional view, on an enlarged scale, of one able quantity of acid is placed in each pot, 8o of the pots or retorts; and Fig. 5 is a plan together with the buttons of metalfor inview of a metallic button. stance, lead when it is desired to manufac- In carrying my invention into practice I ture lead oxid. The pots are then covered provide a box or casing 1, having a lid or with the lids or covers 11' and arranged in' cover 2, which fits tightly, so as to prevent horizontal rows in the casing or chamber one 85 the access of cold air and the exhaustof the above the other until the box is filled, when contained heated air. The sides of the box the cover 2 is applied to prevent the escape and lid are formed with air-inlets 3 for the of hot air and the access of cold air. Live purpose of admitting air when desired to steam is then admitted through the pipe 6 by regulate the temperature of the interior of opening the valve 7, and the heat therefrom 0 40 the box. In one side of the box an observais transmitted to the bed of sand, which heats don-opening, closed by a glass panel at, is the interior of the box toahigh degree. This provided to permit examination of the inteheat is transmitted, of course, to the pots rior to determine whether or not the proper within the box, and the acid contained thereconditions as to moisture, &c., in the process in is vaporized, and the Vapor circulates in 5 5 of oxidation exist. At the bottom of the cascontact with the buttons of metal and graduing is provided a layer of sand 5 or other like ally effects the oxidation of the same. The heat absorbing and conducting material, and temperature throughout the bed of pots in this sand is embedded a steam heatingshould be for, say, three hours 150 Fahrenpipe 6, provided with a stop-cock 7 on the exheit, then gradually reduced until a constant 1 10 5o terior to regulate the supply of steam thereheat of not more than to is obtained.

to. This pipe extends throughout the entire Should the heat in the bed exceed this degree at any time during the process of oxidation, the draft holes or openings 3 may be opened and the temperature regulated accordingly.

The advantage of my apparatus is that it will permit an absolute control of heat, thereby insuring a slow evaporation of acids and give a much purer, more reliable oxid; that various metals with various acids can be acted upon at the same time in the same beds to form different oxids, and that by putting the metal to be oxidized into pots in the manner described the metal may be readily supplied and the finished product taken out, and the process of oxidation is facilitated, being completed by my process in from five to six weeks. The disposition of the pots in layers allows the operation to be made continuous, and each layer when the operation is completed may be removed and another substituted therefor, as will be readily understood.

From the foregoing description, taken in connection with the accompanying drawings,

the construction, mode of operation, and advantages of my invention will be readily apparent, it is thought, without requiring a more extended explanation.

Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of the invention.

Having thus described my invention, what I claim as new, and desire to protect by Let- 1. In an apparatus for making metallic oxids, the combination of a casing provided with draft-openings and having abed of sand therein, a heating-pipe embedded in the sand, and rows of potsdispose'd therein and adapted to contain a supply of themetal and acid to be used in the process of oxidation, substantially as described.

2. In an apparatus for making metallic oxids, the combination of a casing, a bed of sand disposed in the bottom of the casing, a zigzag or serpentine shaped heating-pipe embedded in the sand, and containers in the casing for holding the metal to be treated, substantially as described.

3. In an apparatus for making metallic oxids, the combination of a casing, means for heating the interior thereof, and closed containers within the casing,each adapted to contain a supply of metal and a supply of acid,

, substantially as described.

4:. In an apparatus for making metallic oxids', the combination of a casing, pots disposed therein, each pot adapted to contain a supply of metal and a supply of acid, means for heating the interior of the casing, and means for supplying'a regulated amount of cool air thereto, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

MAURICE JACOBI.

Witnesses:

BELLA D. BERKHEISER,

3 5 ters Patent, is-- ANNA K. FILLING. 

